Improvement in permutation-locks for safe-doors



2 Sheets--Sheet I.

N0. l64,l67.

Patented June 8,1875.

v THE GRAPHIC C0.PHOT0 -L|TH.39&4I PARK PLRGLNX.

2 Sheets- Sheet 2.

H. GROSS.

-Ldok for Safe-Doors.

Patentedlune8,1875.

Pea mutation No. 164,167.

THE GRAPHIC C0.PHOTO -LITH.39&41 PARK PLAOE,N.Y.

UNITED STATES HENRY GROSS, TI, 0am: l

IMPROVEMENTJN PER'lVIUTATIiON FQRSAFEDOORS,

Specification forming part of Letters Patent no. $4.167, dated June3,1815; application filed November 5, 1874.

To all whom it may concern Be it known that I, HENRY GRoss, ofGincinnati, Hamilton county, State of Ohio,-have invented certain newand useful Improvements in Safe-Receptacles for Valuables, of which thefollowing is a specification:

The main object of my invention is to construct the door so that itshall be as invulnerable as any other part of the safe; and consists,for this purpose, of a peculiar construction of said door, whereby itwill, when moving in revolutions or parts of revolutions, operate thebolt-work, lock, or other fastening devices.

My invention further consists of the combination of devices comprisingrevolving door, radiating bolt-work and crank-wheel, lockdog or angle-bar, drive-wheel, and tumblers of a stationary look, all operatingin the simplest manner to make a strong and efficient lock-up.

Figure 1 is a sectional perspective view of my invention, showing lockand door swung back, with the bolt-frame, &c., broken in section. Fig. 2is an elevation of the bearingdial handle and a portion of the hinge ofthe door. Fig. 3 is a transverse section through perpendicular diameterof door. Fig. 4 shows a modified form of bolt-work. Fig. 5 is anelevation of drive and crank wheels, which respectively operate lock andbolt-work.

A is the front wall of a safe, composed of three layers of iron and oneof steel, all stepped off at the jamb, as shown, to coincide with acorrespondingly-stepped door, B. The jamb is perfectly circular to admitof the revolving, when in place, of said door B, which is also circular.The door has formed upon its face a stud, b, which rests in a bearing,0, of a swiveling upright, 0, attached to the jawed hinge 0. Upon thisbearing the door hangs, and revolves when operated by handle D, attachedto the end of stud b. There is also secured to this handle D a dial, E,for registerin g the revolutions and parts of revolutions of the door Bwhile passing a given point, 0, on the upright c. As shown in Fig. 3,the door B has no arbor, spindle, or holes for them through it, and isconsequently constructed and hung as shown, to answer the purposes ofsuch discarded means for operating the lock and bolt-work of the safe.These aforesaid arbors or spindles have been discarded becauserequiring, as they all do, holes through the door, which they cannotclose as firmly as the plates of the door itself. F is the boltframe,being a circular ring of metal, secured to the inner surface of the doorin asuspended position by. means of screws and thimbles f.

Between it and the door I introduce a system of flat bolt-work,consisting of a circular piece of metal, same size or smaller than theboltframe, cut into sections G, of halves, quarter's, or any desirablesize and number, and secured a by and sliding upon the thimbled screws fby means of radially or otherwise cut slots g. To operate these boltsuniformly and convenientlyI secure loosely upon the stud b acrank-wheel, H, having crank-pins h, to engage directly in cross-slots gin the bolts, or to crank-arms g, as shown by dotted lines, Fig. 4. Ineither case any change in the relative'positions of door B and.crank-wheel H will operate the bolts in or out radially from the center,Fig. 4 showing them out or in a locked position, and Fig. 1 closed orinside the frame F. The crank-wheel H is formed with a segmental recess,h, on its outer edge, by which it is operated, one of its boundaries, 1,being radial to the circumference, and the other, 2, tangential. Thiswheel is surrounded by a rim of metal, N, attached to the boltframe F,and formed with a notch, n, on its upper side, which notch is the onlymeans of perpendicular access to said recess 71/, side access being hadalong its full length. Secured fixedly to the stud b is a drive-wheel,I, having a projection, 2', to engage with or act upon a similarprojection upon the first tumbler of a lock, J, hung independent of thedoor B upon hinge j, attached to the inner side of wall A. The lockconsists of the frame K, fitted with stud l0, tumblers L of any desiredpattern to rest upon said stud, and a dog or anglebar, M, to form aconnection between the action of said tumblers and the crank-wheel H ofthe bolts G. When the safe is in a locked condition, the lock J hangsfixedly parallel with the wall A, the notches of tumblers L out of line,and the dog M resting upon the rim N of the bolt-frame F. At the sametime the bolts G are thrown out, as shown in Figs. 1 and 4, or Figs. 3and 5, in dotted lines, and secure the door perfectly againstentrance to,the safe. Now, tomnlock' the it safe; modem is revolved; (carryin-gwit-b it the bolt-work,) to set by the dial E, through the action ofdrive-wheel I z, the combination necessary to bring the notches of thetumblers L into line directly beneath1dog;M-.i. When q the last tumbleris bron ght into line in the usual manner of reverse turning,-the motionof the doorw is-reversed until-v themotch-iaofi the.

rim N passes over the recess h and under the dog M, when, as its supportis taken away,

the dog drops intortheirecessshhandiVnotehess of tumblers L, and bycontinuing the renolu-z tion of the door the stationary dog Mstops themotion of the revolving crank -wheel H by-pressingagainst'end 1, andchanges the relative: positions of said wheel 11 and;

door B, the results of which, as before said, andas are obvious, beingan operation closing or drawing in the bolts G. The door inthiscondition is easily swung open. Now,-

it the door, after being closed, be revolved in the'opposite directionfrom that. by which it was unlocked, the dog M will arrest the progressof the crank wheel H by press? 1 ing against the tangential boundary 2of the recess h, and as it would not retain thispogsition-unlossrguardedby rim-1N, immediately the-notch: w is reaohed, it a is forcedoutleaving the notches of the tumblers L at the same timer Bynow continuingthe motion ofithe door'until the drive-wheel I moves the tumblers L:suflicient "130 disarrange the notches,

the bolts G cannot again be thrown until these said notches are againbrought in line, which requireslalnemoperation I claim as follows:

F 1: The door B, moving in revolutions or zboltswork of the safe,substantially in the manner and for the purpose specified.

2. The combination of the rotating door B,

bolt-work G F N, and crank-wheel H, lock dog M, drive=wheel I, andtumblers L of a stationary lock, J constructed, connected,. andoperating; substantially asand. for the" In testimony ofwhich inventionI hereunto setmy hand this 31st, day of October, 1874.

HENRYGROSS.

Witnessesz- EDGAR'J. GRoss, HENRY ME'roALEm-z fpantswofirevolutionstaoperate the: lock and"

